Micrometric connection



July 29, 1924. 1,503,165

W. F. LAUTENSCHLAGER MICROMETRIC CONNECTION Filed Dec. 1, 1922 awow Patented July 29, 1%24.

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WILLIAM F. naurnnscnnaenn, or CINCINNATI, 01 110, Assmnon TO THE PEERLESS MACHINERY company, or BOSTON, nassacnusnrrs, A :COBPORATION or MASSA- CHUSETTS.

MICROMETRIG CONNECTION. 7

Application filed December 1, 192 2. Serial No. 604,347;

To all whom it may concern:

Be it known that I, WILLIAM F. LAUTEN- SGHLAGER, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Micrometric Connections, of which the following is a specification, reference being had therein to the accompanying drawings.

- This invention relates to a micrometric connection for minutely adjusting the relation of two parts "of a machine to each other, and is designed with special reference to perforating machines of the type shown in an application filed by me in the United States Patent Oflice November 3, 1921, Ser. No. 512,609, (now Letters Patent No. 1,434,- 060 issued Oct. 31, 1922) in which it is employed for adjusting micrometrically the plunger with relation to its operating mechanism. 1

In perforating machines of the above character, the plunger is arranged to carry a 'die-plate, which is provided with a multiplicity of tube dies set therein and projecting therefrom and arranged to perforate a complete design. Tube dies of this charac ter are comparatively delicate, easily injured or broken, and very expensive. It requires skill and experience to so adjust the machine that the dies will perforate a clean pattern and yet not be injured by too forcible contact with the work-supporting plate. As a general rule, a strip of soft brass or other suitable material is arranged upon the work-supporting plate to receive the cutting edges of the tube dies, and sometimes a backing strip of paper is interposed between the brass plate and the work to obviate injury to the dies; but even these precautions will not prevent injury, if there is an improper adjustment of the plunger with relation to the operating mechanisms, and the plunger is adjusted too far downwardly. It is desirable and necessary, therefore, in machines of this character to have as delicate and fine an adjustment as possible between the die-carrying plunger and its operating mechanism, in order to secure clean cutting and yet avoid damaging the dies.

The main object of my invention is the provision of a simple and efficient connection between the plunger and its operating CAL means, whereby the relation of these two parts 'may be micrometrically adjusted;

Ether objects of the invention will be more specifically described and set forth hereinafter. I i 1 7,

My-invention in its preferred form contemplates the provision-of a member for connecting the two parts of the machine. said member having a main portion upon which is mounted one of'the parts, anda subordinate portion upon which is mounted the other part of the machine (the subordin' ate portion being in eccentric relation to the main portion), and means for rotating the connecting memberto vary the relation between the two parts of. the machine. The amount of the eccentricity which the-sub ordinate part bears to the main part may,- of course, bevaried to suit the range of adjustment desired in the machine. The rotation of the connecting member is preferably secured by a screw lying tangent to the arc of rotation.

In the drawings illustrating the preferred form of my invention, Fig. 1 is a front elevation of a portion of a perforating machine, showing a connection constructed in accordance with my invention and used for connecting the plunger of the machine with its operating'mechanism; and Fig. 2 is a sectional view on line 22 in Fig. 1, looking from right to left.

In the drawings illustrating the application of my invention to the perforating machineshown in my application hereinbeforew referred to, there is shown a portion only of the machine, comprising a part of the plunger and adjacent parts of itsoperating mechanism. For convenience, the parts shown herein and taken from my priorfapplication are designatedby the same ref erence numerals used inthat prior applica tion, to which reference maybe made fora more complete description of the entire machine and its mode of operation.

Referring to the drawings, 50 designates a plunger head carried by two arms 51, connected together by a cross piece 52. The plunger head 50 carries a die comprisinga plate provided with a plurality of tube dies 61 of ordinary construction, set in the plate and arranged in a design, and to permit the material cut out by the tube dies to pass up through the dies and the plate 60 and then to escape, the latter is provided with a series of lugs 62, adapted to engage the face 58-of the plunger head when the die is arranged in position and to hold the plate 60 away from the plunger head. For

holding the die in position on the plunger head,-the latter is provided with two ears 63, one on each end; each ear being adapted to be forced toward the end of the plunger head by a butterfly headed screw 64 threaded therethrough and into said end inorder to contract a dowel hole cut partly out of the end of theplunger head and partly out of the ear and located at the base 'of the ear to grip a dowel 66 formed on the back face of the die-plate 60.

Part only of the operating means is shown in the drawings, comprising the'lower portionsof two toggle-joints made up of lower arm 68and upper arm 69, loosely hinged together ona shaft 70, the upper portion of the lower arm being bifurcated to receive the lower portion of the upper arm. The

arms 68 and 69 may be reinforced by webs 79. The toggle-joints are shown as operated by pitmansSL-each pitman havingits end in the form of a split-collar .83 adapted to encircle the inner end of one of the shafts 70,

- ends 72 of the shaft 73 are arranged eccentil) trically with respect to the main body 73 of the shaft, so that by turning the shaft 73 the plunger head may be moved within certain limits, dependent upon the amount of the eccentricity, upwardly and downwardly in relation to the toggle-joints.

The novel feature of my invention resides in the means provided'for rotating the shaft 73, in orderto adjust the relation of the plunger to its operating mechanism. In the form of the invention shown in the drawings, one of the bearings 122, integral with the plungerhead, in which the shaft 73 is mounted, is provided with an upwardly extending arm 124 carrying on its inner side a collar 126, loosely mounted on a pin 128 set in the arm 124. Between the two bearings 1 22 there is mounted on the shaft 73, and secured thereto by a key 130, a collar 132 provided with an upwardly extending arm 134, in which is set a pin 136 carrying loosely a threaded block 138.

I The collar 126 is provided with a through and through bore in which is loosely mounted an adjusting screw 140, having a reduced portion fitting the said bore. A knurled head 142' may be secured on the finger end of the. screw 140, and the screw is locked arm 124 and in consequence rotating the shaft 73 in one direction or the other. This rotation raises or lowers the eccentric ends 72 of the shaft 73 in relation to the center of the shaft and thereby raises or lowers theplunger head in relation to the arms 68. By providing the screw 140 with a fine thread adjustment to a microscopical degree is possible.

Although my device is designed with particular' reference to perforating machines, yet it is capable of use in other environments for adjusting the relation between various mechanisms where a microscopical adjustment is necessary or desirable. The invention is not to be limited to the exact form herein shown and described since it may be embodied in other forms of construction all within the scope of the following claims.

lVhatl claim is 1. In a perforating machine, the combination of a die-carrying plunger, means for operating said plunger, and means for adjusting the relation between said plunger and said operating means; said means comprising a shaft having a main portion and an eccentric portion, said plunger being mounted on one of said portions and said operating means being connected to the other of said portions, an arm fixed to the main portion of said shaft and carrying a threaded member, and an adjusting screw mounted on a fixed part of said plunger and threaded through said threaded member.

2-. In a perforating machine, the combination of a die-carrying plunger, operating means therefor, and means for adjusting the relation between said plunger and said operating means; said means comprising a shaft having a main portion and an eccentric portion, said plunger being mounted on one of said portions and said operating means on the other of said portions, an arm keyed to said shaft and provided with a loose threaded portion, and an adjusting screw loosely mounted on a fixed part of the plunger head and threaded through said loose member on said arm, said screw being normally tangent to said shaft.

3. In a perforating machine, the combination of a die-carrying plunger, operating means therefor, and means for adjusting the relation between said plunger and said operating means; said means comprising a shaft having a main portion and an eccensaid plunger head and threaded through said threaded member for rotating said shaft.

L. In a perforating machine, the combination of a die-carrying plunger, operating means therefor and means for adjusting the relationbetween said plunger and said operating means in order to adjust the length of stroke of said plunger; said means comprising a shaft having two portions in eocentric relation to each other, said plunger being mounted on one of said portions and said operating means on the other of said portions, an arm mounted on said shaft, a threaded nut carried by said arm and mounted thereon to permit of being turned freely and an adjusting screw pivotally mounted on a fixed part of the plunger head and threaded through said nut carried on said arm whereby said adjusting screw may be turned to turn said shaft in one direction or the other and thereby to vary the 

